diff --git a/developer-south-coast/2018-02-modernizing-dotnet-with-docker/src/SignUp.MessageHandlers.IndexProspect/packages.config b/developer-south-coast/2018-02-modernizing-dotnet-with-docker/src/SignUp.MessageHandlers.IndexProspect/packages.config
index 8753ad9..a2ec99e 100644
--- a/developer-south-coast/2018-02-modernizing-dotnet-with-docker/src/SignUp.MessageHandlers.IndexProspect/packages.config
+++ b/developer-south-coast/2018-02-modernizing-dotnet-with-docker/src/SignUp.MessageHandlers.IndexProspect/packages.config
@@ -3,7 +3,7 @@
   <package id="Elasticsearch.Net" version="5.4.0" targetFramework="net452" />
   <package id="NATS.Client" version="0.8.0" targetFramework="net452" />
   <package id="NEST" version="5.4.0" targetFramework="net452" />
-  <package id="Newtonsoft.Json" version="10.0.2" targetFramework="net452" />
+  <package id="Newtonsoft.Json" version="13.0.2" targetFramework="net452" />
   <package id="prometheus-net" version="1.3.5" targetFramework="net452" />
   <package id="protobuf-net" version="2.0.0.668" targetFramework="net452" />
   <package id="System.Reactive" version="3.1.1" targetFramework="net452" />